绢毛蔷薇居群遗传多样性的SSR分析

Southwest China Journal of Agricultural Sciences(2011)

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Abstract
以收集的8个绢毛蔷薇居群的80份样本为研究对象,利用SSR技术分析其遗传多样性。80个样本的多态位点百分率、Nei's基因多样性指数(H)和Shannon信息指数(I)分别为69.66%、0.1425、0.2296。比较8个居群的遗传多样性指标,显示居群间遗传变异55.53%,居群内遗传变异44.47%。茂林居群的遗传多样性最高(H=0.0879,I=0.1331,多态位点百分率为25.84%)。聚类分析结果显示,8个居群可聚类为2组。居群遗传分化系数(Gst)和基因流(Nm)分别为0.5553和0.4005,表明绢毛蔷薇基因分化明显,基因交流受阻。
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Key words
Population biology,Rosa sericea Lindl,Genetic diversity,SSR
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